Registro DMARC
v=spf1 ip4:89.161.191.53 a mx -all

Registro IPv4
host: sti.biz.pl
class: IN
ttl: 3600
type: A
ip: 89.161.191.53

Servidores DNS Principal (mname) y Secundario (rname)
host: sti.biz.pl
class: IN
ttl: 3600
type: SOA
mname: dns.home.pl
rname: admin.home.pl
serial: 1550761570
refresh: 14400
retry: 7200
expire: 2419200
minimum-ttl: 3600

Servidor de Correo
host: sti.biz.pl
class: IN
ttl: 3600
type: MX
pri: 10
target: sti.biz.pl

Información TXT
host: sti.biz.pl
class: IN
ttl: 90
type: TXT
txt: v=spf1 ip4:89.161.191.53 a mx -all
entries: Array